New AMD SinkClose flaw helps install nearly undetectable malware (www.bleepingcomputer.com)

submitted 2 months ago by DocMcStuffin@lemmy.world to c/cybersecurity@sh.itjust.works

20 comments fedilink hide all child comments

AMD is warning about a high-severity CPU vulnerability named SinkClose that impacts multiple generations of its EPYC, Ryzen, and Threadripper processors. The vulnerability allows attackers with Kernel-level (Ring 0) privileges to gain Ring -2 privileges and install malware that becomes nearly undetectable.

Tracked as CVE-2023-31315 and rated of high severity (CVSS score: 7.5), the flaw was discovered by IOActive Enrique Nissim and Krzysztof Okupski, who named privilege elevation attack 'Sinkclose.'

Full details about the attack will be presented by the researchers at tomorrow in a DefCon talk titled "AMD Sinkclose: Universal Ring-2 Privilege Escalation."

you are viewing a single comment's thread
view the rest of the comments

[-] vikingtons@lemmy.world 3 points 2 months ago* (last edited 2 months ago)

That is indeed weird. I don't see a mention of summit and pinnacle ridge either, even though rome, castle peak and renoir are covered. Since this is fix is an AGESA upgrade, I'm inclined to believe it'll cover zen 2 on any platform.

I'll reach out for clarification. I have a Matisse X production system running and there's no way I'm leaving this be.

this post was submitted on 10 Aug 2024

49 points (90.2% liked)

Cybersecurity

5627 readers

62 users here now

c/cybersecurity is a community centered on the cybersecurity and information security profession. You can come here to discuss news, post something interesting, or just chat with others.

THE RULES

Instance Rules

Be respectful. Everyone should feel welcome here.
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia.
No Ads / Spamming.
No pornography.

Community Rules

Idk, keep it semi-professional?
Nothing illegal. We're all ethical here.
Rules will be added/redefined as necessary.

If you ask someone to hack your "friends" socials you're just going to get banned so don't do that.

Learn about hacking

Hack the Box

Try Hack Me

Pico Capture the flag

Other security-related communities !databreaches@lemmy.zip !netsec@lemmy.world !cybersecurity@lemmy.capebreton.social !securitynews@infosec.pub !netsec@links.hackliberty.org !cybersecurity@infosec.pub !pulse_of_truth@infosec.pub

Notable mention to !cybersecuritymemes@lemmy.world

founded 1 year ago

MODERATORS

kid@sh.itjust.works

Lanky_Pomegranate530@midwest.social